Built-in ventilator



00. 4, 1949. J, B, KO H 2,483,547

BUILT IN VENT ILATOR Filed June 27, 1946 3 Sheets-Sheet l INVENTOR JOHN BRANDT KOCH ATT RNEYS Oct. 4, 1949.- J. B. KOCH BUILT-IN VENTILATOR Filed June 27, 1946 z Sheets-Sheet 2 INVENTOR JOHN BRANDT KOCH Get. 4, 1949. J. B. KOCH BUILT-IN VENTILATOR 3 Sheets-Sheet 3 Filed June 27, 1946 mw (@IM me I INVENTOR JOHN BRANDT KOCH ATTORNEYS Patented Oct. 4, 1949 BUILT-IN VENTILATOR John B. Koch, Detroit, Mich., assignor to American Blower Corporation, Detroit, Mich., a corporation of Delaware ApplicationJune 27, 1946, Serial No. 679,708

Claims.

This invention relates to a ventilating unit adapted to be built into a wall, and is particularly for use as a ventilating fan for kitchens or other rooms for expelling vapors therefrom.

An object of the invention is to provide an improved structure of a ventilating unit for installation in the wall of a room.

Another object of the invention is to provide an improved structure for a ventilating unit having an improved weatherproof door and means of hingedly mounting the same.

Another object of the invention is to provide an improved structure for a ventilating unit wherein the unit is adapted for mounting in walls of various thickness.

Another object of the invention is to provide an improved structure for a ventilating unit wherein the door which opens on the weather side of the unit is provided with an improved a weather door I I for closing the opening provided by the wall-box section. A wall plate section I2 which supports the motor I3 and the fan I4 is adapted for installation from the opposite side of the wall and has adecorative grille I5.

The wall plate section l2 has a tubular member it that telescopes within the generally rectangular section I! of the wall-box section II] to provide for placement of the unit in walls of different thickness.

The walLbox section III consists of the rectangular tubular section I! which has the angle flange I8 extending around the same at one end thereof. The angle flange I8 faces against one side of the wall in which the unit is installed, preferably an exterior wall surface, and the tubular section I! is suitably secured to the opening framed in the wall in which the unit is placed.

form of latch which operates at one time to hold Th weath r d 1| is substantially the door in open position and upon a second shaped member reinforced with a smaller panactuation, to allow the door to close. shaped member I9 suitably attached to the main Still another object of the invention is to propan-shaped member 20. The flange 2| around vide an improved structure for a ventilating unit the door I I is adapted to be positioned in close wherein the motor for the ventilating fan is carproximity t t fac of the flange l8 and ried upon a resilient motor mounting of an imvents entrance of weather elements into the tuprov and simplifie ype f r bsorbing vibrabular member 11. The tubular member [1 has tion and noise from the motor in the fan. the end 22 thereof extending beyond the face of Further objects and advantages will become the flange I8 to prevent capillary movement of parent from the drawings and the following the weather elements across the face of the flange description. into the square section II. Inthe drawings: The weather door II is hinged along the top Figure l is a perspective three-quarter front edge of the wall-box section I0 by having the view of the device of this invention. flange 2| thereof contained between a drip mold- Figure 2 is a vertical cross-sectional View taken ing 23 and a support angle 24, the support angle alongline 2-2 of Figure 1. 24 being secured to the'member I! by the nuts Figure 3 is an end elevational view of the 'de- 25. As will be seen in Fig. 2, the weather door vice illustrated in Figure 2 as taken from the I th hinges upon th upper edge of t upright-hand side of the device illustrated therein port member 24 in the corner formed by the but with the grille member removed. 40 flange 2|, and the drip molding 23 prevents re- Figure4 is a vertical cross-sectional view taken moval of the flange 2i from upon the support along line 4-4 of Figure 2. member 24 even when the door is in closed posi- Figure 5 is a vertical cross-sectional view taken tion, as illustrated in Fig. 5. along line 5-5 of Figure 4. The wall plate section I2 consists generally of Figure 6 is a partial cross-sectional view illus- 5 the tubular member I6 that has the throat memtrating the latch for holding the weather door in ber secured thereto, and which terminates in the open position. flange portion 21 which is secured to the inside Figure '7 is a cross-sectional view taken along of the wall in which the unit is installed by means line 'I-I of Figure 4 illustrating the switch for of suitable fastenings. controlling the motor of the unit. The grille member I5 is secured to the flange Figure 8 is a plan view of the motor mounting portion 21 of the throat 26 by means of fastenof the fan motor. ings in a conventional manner.

In this invention, :the device consists of a wall The electric motor I3. is mounted within the box section I0 adapted to be installed into a throat 26 upon a pair of resilient sheet metal wall from one side thereof and provided with support brackets 28 and 29, more particularly illustrated in Figures 2, 3 and 8. Each of the support brackets 28 and 29 consists of a formed sheet-metal member of thin-gauge metal with substantially the contour of a U-shaped member with the ends of the legs of the U-shaped member formed on a radius outwardly of the member. Thus, each of the mounting members 28 and 29 consists of a base portion 30 with the extending legs 3!.

The legs 3| of the motor mounting members 28 and 29 are provided with triangular-shaped openings 35 whereby the legs 3| consist of two converging resilient leg portions.

The motor mounting members 128 and 29 are secured to the throat 26 by means of suitable bolts 35, or any other usual type of fastening device. The base portion 30 (of the motor mountings 28 and 29 is provided with ears 3'! formed at substantially right angle to the base portion 30. Screws or bolts pass through the ears 3'! for attaching the motor 1 3 to the motor mountings 28 and 29.

The weather door H of the ventilating unit is, adapted to be held in open position, as illlustrated in Figure 1, by a lock mechanism more particularly illustrated in Figures 4, 5 and 6.

- "*T-he weather door H is provided with a quadrent 38 attached to the door ll along one vertical edge thereof, as illustrated in Fig. 4. An ear 3!! is formed outwardly in the quadrant 38 and a tension spring 41! extends between the ear 39 and an opening in the casing member H for applyingspring tension to the door H for holding the same in closed position, as illustrated in Fig. 5.

The free end of the quadrant 38 has a hole to receive one end of a spring 42 that has the '.opposite .end thereof connected to a pull-chain 43 that passes over a roller 44 and through a grommet 45 for placing the chain adjacent an inside wall in which the ventilating unit is mounted. Thechain'43 passes through an opening 46 in the frame. of the grille 12 so that the chain may be grasped to open the door l1. 7 Arotating lock 41 is pivotally mounted to the side wall of the frame member I! upon the pivot bearing 48 and is provided with 'V-shaped notches 49 and 5B in opposite ends thereof.

The locking device is adapted to operate in such a manner that one pull upon the chain 43 will cause the door II to open and operate the lock ,4] so, as to hold the door in the open position illustrated in Fig. 2, and a second pull on the chain Wi l-cause the lock 4.1 o rel a e the door II to allow it to return to the closed position under action of the spring 40.

The quadrant 38 is provided with an ear 5| extending toward the wall of the frame member 11 which provides the actuating member for the lock 4].

When the chain 43 is pulled downwardly, the

door II and the quadrant 38 will be hinged .outwardly and the radius of movement of the forward edge of the ear 5| is such that it will strike the upper prong of the notch .49 in the lock 41 to rotate the lock in a counter-clockwise direction to substantially the full-line position thereof indicated in Fig. 6 so that release of the pullchain 43 will allow the flanged edge 52 on the quadrant 38 to engage the lower prong of the notch 50 until the upper prong of the notch 58 engages the flange 52 to lock the member 4? against further counter-clockwise rota ion, a thus hold the door il in open position, as illustrated in Figure 6.

To close the door H, the pull-chain 43 is again pulled downwardly, causing the door l I to rotate in a clockwise direction and bring the forward edge of the ear against the lower prong of the notch 49 of the lock 41 as indicated by the dot-dash line in Fig. 6, to rotate the member 41 in a counter-clockwise direction and place the same in the dot-dash position indicated in Fig. 6, the prongs of the notch 50 at this time clearin the flange 52. The outward movement of the door II is limited by the ear 5| striking the member 41 near the pivot bearing 48. Release of the pull-chain 43 will now allow the forward edge of the flange 52 to engage the left-hand side of the member 41 during closing movement of the door it and the quadrant 38 to place the member 41 in the position indicated in Fig. 5, at which time the device is ready for a further opening movement of the door.

Opening and closingof the door ll will cause the electric motor I3 to start and stop, respectively. For this purpose an electric switch 53 is mounted adjacent one edge of the door H and is carried upon a housing member 54 that also includes a receptacle 55 adapted to receive the prongs of a companion plug 56 on the electric cord '51 for the motor l3 to thus connect the switch 53 in series with the electric motor l3. The switch 53 is of a type that when in one position, with the door -l| closed, the switch will open the electric circuit through the motor I3 and when the door II is opened to release the spring-actuated mechanism of the switch 53, the switch will close to complete electric circuit through the motor l3. Thus, opening and closing of the door ll also controls operation of the motor l3.

While the apparatus disclosed and described herein constitutes a preferred form of the invention, et it will be understood that the apparatus is capable of alteration without departing from the spirit of the invention, and that all modifications that fall within the scope of the appended claims are intended to be included herein.

Having thus fully described my invention, what I claim as new and desire to secure by 5' Letters Patent is:

1. In .a ventilating unit for installation in a wall, .a quadrilateral wall-box section open at opposite ends thereof, a door for closing one .end of said wall-box, and an air-handling device for disposition within said wall-box consisting of a circular tubular member having an electric motor and fan mounted therein for moving air therethrongh, said tubular member being telescopically received within said wallbox and havin a decorative grille on one end thereof, and an actuating member for said door carried thereon and positioned between said wall box and said tubular member, said actuatin member including a pull-chain for operating said member and disposed between said wall box and said tubular member and terminating exteriorly of the ventilating unit on one side of the wall in which it is'installed, a cam member rotatably carried on said wall-box adjacent said actuating member, said actuating member having means thereon to engage and operate said cam member to move the same into position for engagement by said actuating member to hold said door in open position, said last-mentioned means being also adapted to engage said cam member to operate the same to release said actuating member upon a second operation thereof,

2,. In a Ventilating unit for installation in a wall, a quadrilateral wall-box open at opposite ends thereof, a door for closing one end of said box, a fan unit within said box for moving air therethrough, and means for opening and closing said door, said means consisting of a bracket secured along one edge of said door and extending into said box, spring means for closing said door, and a lock for holding said door in open position, said lock consisting of a rotatable member having forked opposite ends, means on said bracket for engaging one of said forked ends to rotate said rotatable member to position the opposite forked end thereof in alignment for engagement by means extending from said bracket to hold said door in open position thereby.

3. In a ventilating unit for installation in a wall, a quadrilateral wall-box open at opposite ends thereof, a door for closing one end of said box, a fan unit Within said box for moving air therethrough, means for opening and closing said door, said means consisting of a bracket mounted on said door along one edge thereof, spring means for closing said door, a projection extending outwardly of said bracket, a rotatable member having forked opposite ends adjacent said bracket and disposed in the path of arcuate movement of said projection, and a pull-string for operating said door to cause said projection to engage one end of said forked member to place the same in position for engagement of the opposite end of the forked member by said bracket to thereby hold the door in open position.

4. In a ventilatin unit for installation in a wall, a quadrilateral wall-box open at opposite ends thereof, a door for closing one end of said box, a fan unit within said box for moving air therethrough, means for opening and closing said door, said means consisting of a bracket mounted on said door along one edge thereof, spring means for closing said door, a projection extending outwardly of said bracket, a rotatable member having forked opposite ends adjacent said bracket and disposed in the path of arcuate movement of said projection, and a pull-string for operating said door to cause said projection to engage one end of said forked member to place the same in position for engagement of the opposite end of the forked member by said bracket to thereby hold the door in open position, said first end of said forked member being engaged by said projection upon a second actuation of said pull-string for positioning said member with the opposite forked end thereof out of engagement with said bracket for return to its initial position thereby upon release of the pull-string.

5. In a ventilating unit, a door, and an actuating means operably associated with said door for opening and closing the same, said means consisting of a bracket secured along one edge of said door and extending into the ventilating unit, spring means for closing said door, and a lock for holding said door in open position, said lock consisting of a rotatable member having forked opposite ends, means on said bracket for engaging one of said forked ends to rotate said rotatable member to position the opposite forked end thereof in alignment for engagement by means extending from said bracket to hold said door in open position thereby.

JOHN B. KOCH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,698,328 Duffie Jan. 8, 1929 1,761,752 Scott June 3, 1930 1,907,727 Breidert May 9, 1933 1,971,920 Ross Aug. 28, 1934 2,225,349 Morse Dec. 17, 1940 2,246,602 Schultz et al. June 24, 1941 FOREIGN PATENTS Number Country Date 22,350 Great Britain Jan. 15, 1903 

